| 摘要 |
Disclosed is an optic pick-up for recording and playing back which stores and play back information by selecting one of the plurality of optic recording media comprising an optic generation portion which generates an optic beam, a reflection portion which selectively reflects the optic beam at least toward two directions, plural concentration portions which concentrate the optic beam reflected from the reflection portion at each optic recording media, and a detection portion which senses the optic beam reflected from each optic recording media and detects a electric signal. Thus, the manufacturing cost can be reduced.
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